One mother, Yerelyn Cueva, recently caught her son Jariel using Alexa to do his math homework. What else is Alexa for except to perform the most basic operations we could otherwise complete ourselves? SEE ALSO: Michelle Obama's letter to her younger self is so tender it has broken me Give the kid credit -- subtraction isn't easy, and at least he's not asking Alexa to add two plus two. Amazon reported selling "tens of millions" of Echo devices in 2018. So expect this homework-cheating crisis to grow, not contract, in the upcoming years.